vox.1

wav文件和VOX文件格式互相转换的源代码。

.de Sh
.br
.ne 5
.PP
\fB\\$1\fR
.PP
..
.de Sp
.if t .sp .5v
.if n .sp
..
.TH VOX 1
.SH NAME
vox, devox - programs to convert voice files between linear and Oki (Dialogic)
ADPCM format.
.SH SYNOPSIS
.B vox [-b 8 | -b 16] \fIinfile outfile \fB
.br
.B devox [ -b 8 | -b 16] \fIinfile outfile \fB
.br
.SH DESCRIPTION
.I vox 
translates sound files from linear (8 or 16 bit) to Oki ADPCM format.
.I devox 
translates sound files from Oki ADPCM to linear (8 or 16 bit) format.
The Oki ADPCM format is commonly found on platforms using voice
processing hardware from Dialogic for computer telephony applications.
The default Dialogic file is
titled with a '.vox' suffix and is sampled at 6022 samples per
second -- thus considered at 24 Kbit/sec coder.  Sampling at 8000
samples per second is also popular in the computer telephony world.
.SH OPTIONS
The option syntax is pretty simple
.br
	vox file.8bit file.32K
.br
translates a sound sample in 8 bit linear file 
into Oki ADPCM format, while
.br
	devox file.32K file.8bit
.br
does the reverse.
.PP
Linear File options:
.TP 10
.B -b 8 
(Default) The linear file is in 8 bit (unsigned byte) format.
The option is not needed since it is the default.
.TP 10
.B -b 16 
The linear file is in 16 bit (signed word) format.
.SH FILE TYPES
.I vox
and
.I devox
only support raw (no header) binary files.  The
ADPCM files are compatible with Dialogic's so-called vox files. 
They contain two 4 bit samples stored in one unsigned char.
The sampling rate does not matter to these programs (may be
6 or 8 kHz).  The linear files are either in 8 bit linear (not mu-law)
or 16 bit linear format.
.SH BUGS
Only supports raw files.  Use the sox program to convert the linear
files to/from other file formats.
.SH AUTHOR
	Tim Bower, [e-mail]
.SH NOTICES
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted.
This software is provided "as is" without express or implied warranty.